Perpendicular is opposite sign and reciprocal
-9/2x is the slope of perpendicular line
Answer:
7
Step-by-step explanation:
h=hat
t= t-shirt
60-21=$39
39=3h
39/3=13 per one hat
21=3t
21/3=7= 7$ per one shirt
Answer:
8 weeks
Step-by-step explanation:
to solve divide the total cost of kindle by the money she saves each week.
200÷25 is 8.
and to check you can multiply 25 x 8